^ Honestly, the JW's theme sounds too triumphant to work for a more dramatic Superman movie. It would have to be "retooled" in order to work within that context, and I feel like that would be a cop-out way of doing it. With Bond there is a cohesive-producer driven franchise. The Bond theme doesn't just celebrate Bond, but the effectiveness of the franchise as a whole. Superman has a HUGE amount of time between the decades (aside from SR), and using that theme would keep referencing the past.
And I LOVE JW's Superman theme. I think it's unbeatable in terms of melodic quality. I own the Superman soundtrack, I get chills whenever I hear a good cover of it as well. But that doesn't change the fact that MOS is trying to distance itself from past franchises.
Besides, I liked some of the themes for the straight to DVD movies (not by Williams), and MOS sounds like one of Hans Zimmer's better works of the 2010 period of time. It's a fantastic score, but it isn't musical "canon."